Since both values are positive, it is in quadrant 1
March = -165
April = -156
In march he is negative MORE money, meaning he has MORE money in April
This question is trying to confuse you, ussually the lowest number means less, but these numbers are negative, so the lowest number means more.
He has the least amount of money in March
I could be wrong, but I would say it's 18.325
2 x 10 to the 3rd power is
2x10^3